* serial.h: Fix prototye for serial_raw().

* ser-bsd.c, ser-termios.c:  Fix args for serial_open() &
serial_write() to match prototypes.
* remote-st2000.c (get_reg_name):  Make *p be const.

gdb/ser-termios.c

@@ -70,7 +70,7 @@ static fd_set readfds;
 
 int
 serial_open(name)
-     char *name;
+     const char *name;
 {
   struct termios termios;
 
@@ -193,7 +193,7 @@ serial_setbaudrate(rate)
 
 int
 serial_write(str, len)
-     char *str;
+     const char *str;
      int len;
 {
   int cc;